CDS

Alioth

Query : Alioth

Basic data :
* eps UMa -- alpha2 CVn Variable
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types: 		a2* (), * (*,AG,...), ** (**,CCDM,...), V* (CSV,V*,...), IR (IRAS,IRC,...), UV (CEL,TD1), PM* (2018yCat), NIR (2MASS)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) : 		12 54 01.7495922 +55 57 35.362645 (Optical) [ 0.16 0.15 90 ] A 2007A&A...474..653V
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK5 coord. (ep=J2000 eq=2000) : 		12 54 01.7489995 +55 57 35.358445 [ 0.16 0.15 90 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) : 		12 51 50.0763429 +56 13 51.124734 [ 0.16 0.15 90 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) : 		122.1800376477 +61.1646463243 [ 0.16 0.15 90 ]
Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode"
  • pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr)
  • pm-dec : mu-dec (expressed in the ICRS system in mas/yr)
  • [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg)
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the proper motion reference
Proper motions mas/yr : 		111.91 -8.24 [0.23 0.19 90] A 2007A&A...474..653V
Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode"
  • value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options
    (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity)
  • [error] : error of the corresponding value displayed before
  • (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown)
  • quality : flag of quality ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the value's origin
Radial velocity / Redshift / cz : 		V(km/s) -12.70 [0.2] / z(~) -0.000042 [0.000001] / cz -12.70 [0.20]
   A 2006AstL...32..759G
Syntax of parallax is : 'value quality [error] bibcode'
  • value : parallax value
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • [error] : mean error
  • bibcode : bibcode of the parallax reference
Parallaxes (mas): 		39.51 [0.20] A 2007A&A...474..653V
Spectral type is made of 3 parts: %coding is composed of 4 parts :
  • the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities;
  • a quality letter: A=best quality→E=worst quality, {� } =unknown quality %
  • a quality letter: A=best quality -> E=worst quality, {� } =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type: 		A1III-IVpkB9 C 2003AJ....126.2048G
Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z
  • (System) : may be AB (default is Vega)
  • flux-value : value of flux or magnitude
  • [error] : error value
  • quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality)
  • MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4])
  • bibcode : bibcode of the flux reference
Fluxes (9) :
U 1.76 [~] C 2002yCat.2237....0D
B 1.75 [~] C 2002yCat.2237....0D
V 1.77 [~] C 2002yCat.2237....0D
R 1.79 [~] C 2002yCat.2237....0D
G 1.731607 [0.017023] C 2022yCat.1355....0G
I 1.82 [~] C 2002yCat.2237....0D
J 1.72 [~] C 2002yCat.2237....0D
H 1.73 [~] C 2002yCat.2237....0D
K 1.76 [~] C 2002yCat.2237....0D
SIMBAD within arcmin
', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay Simbad points in this preview
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sedIcon
within arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR.
The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding.
Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!). sed-help-icon

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (45) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

* eps UMa GSC 03845-01190 PLX 2964 UBV 11641
* 77 UMa HD 112185 PLX 2964.00 UBV M 18813
** BLM 2 HGAM 620 PMC 90-93 342 uvby98 100112185
AG+56 909 HIC 62956 PPM 33769 V* eps UMa
BD+56 1627 HIP 62956 RAFGL 1584 WDS J12540+5558AB
CCDM J12540+5558AB HR 4905 Renson 32580 WEB 11163
CEL 4168 IRAS 12518+5613 ROT 1909 [HFE83] 911
CSV 101344 IRC +60222 SAO 28553 AAVSO 1249+56
FK5 483 JP11 2330 SKY# 23986 Gaia DR3 1576683529448755328
GC 17518 2MASS J12540170+5557349 TD1 16542
GCRV 7722 N30 2976 TIC 150387644
GEN# +1.00112185 NAME Alioth TYC 3845-1190-1

References (24 between 2018 and 2023) (Total 470)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow new references on this object
                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)

Collections of Measurements


velocities : 13    diameter : 1    ROT : 3    Fe_H : 8    PLX : 3    PM : 5    MK : 20   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

velocities (13) 

 |typ|    Value    R   m.e.  |A (Nmes)|na,Q,dom ,   res    D| Obs.date | Rem.  |Or|     Reference     |
 ------------------------------------------------------------------------------------------------------
 |v  |   -9.3                |  ( 260)|s , ,    ,           |          |       |  |1995A&AS..114..269D|

diameter (1) 

 |diameterQ unit| error  | filter | method |     reference     |
 ---------------------------------------------------------------
 |5.76E+06  km  |        |V       |Interfer|2014MNRAS.443.1629S|

rot (3) 

 |  Vsini  [  err   ] (mes)|Q|     reference     |
 -------------------------------------------------
 |  32.9   [  1.4   ] (   )| |2019MNRAS.483.2300S|

fe_h (8) 

 | Teff  log.g | Fe_H  c|CompStar |CatNo|     Reference     |
 ------------------------------------------------------------
 |  9333 3.20  |-0.10   |SUN      |     |1976IAUCo..32..623E|

plx (3) 

 |    plx    :    m.e     R |     reference     |
 ------------------------------------------------
m|  40.30    :   0.62       |1997A&A...323L..49P|

pm (5) 

 |  pm-ra  [   m.e   ]|  pm-de  [   m.e   ]|syst|     reference     |
 --------------------------------------------------------------------
 | +111.91 [    0.23 ]|   -8.24 [    0.19 ]|ICRS|2007A&A...474..653V|

mk (20) 

 |ds/mss|           Spectral type            |     reference     |
 -----------------------------------------------------------------
m|  /   |A1 III-IVp kB9                      |2003AJ....126.2048G|
Observing logs


ISO : 4    IUE : 14   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

iso (4)

The 2 columns in color are computed by VizieR, and are not part of the original data.
Note: Quick-look images of the data, and specific documentation, are accessible by clicking on the TDT observation identifier
VI/111/isolog
Post annotation 		ISO Observation Log (ISO Data Centre, 2004) [ReadMe+ftp]

*The ISO Observation Log[image] (36737 rows) (Note)		img(gal)
start AladinLite 
 Full      _r        TDT    AOT    minLam  maxLam  Target                                 oStart         oLen    recno   FOV                  RAJ2000   DEJ2000 cal  ObsID    abs  PropID  
        arcmin                      um      um                                             s             s                                     deg       deg                              


    1     0.010  34600576  PHT19    8.33   14.94  BS 4905                         1996-10-27T16:00:07    112     14502  52" D               193.5071  +55.9597      CLEINERT +    HERBIGAE
    2     0.010  34600578  PHT22   54.76  116.92  BS 4905                         1996-10-27T16:02:49    810     14503  405"x135"           193.5071  +55.9597      CLEINERT +    HERBIGAE
    3     0.010  34600579  PHT22  146.42  202.26  BS 4905                         1996-10-27T16:17:13    278     14504  541"x181"           193.5071  +55.9597      CLEINERT +    HERBIGAE
    4     1.507  34600575  PHT17    8.33   14.94  BS 4905OFF                      1996-10-27T15:57:35    102     14501  52" D               193.5071  +55.9347      CLEINERT +    HERBIGAE

iue (14) 

 |Homogenized Name:  ComplID   |PROG |CL|D CAM IMAGE A| FES  MD|Obs.da  Time |ExpTim|m|CEB|S|      Comments      |F|     reference     |
 ---------------------------------------------------------------------------------------------------------------------------------------
 |HD 112185       :            |AW156|36|H SWP 07944 L| 4629 FU|800214 063900|000060| |602|V|                    |*|1996IUEML.C......0I|

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : Alioth

Link by name to the catalogue in VizieR :

AG+56 909 BD+56 1627 CCDM J12540+5558AB CEL 4168 FK5 483
GSC 03845-01190 HD 112185 HIC 62956 HIP 62956 HR 4905
IRAS 12518+5613 IRC +60222 2MASS J12540170+5557349 PLX 2964 PPM 33769
RAFGL 1584 SAO 28553 TD1 16542 TYC 3845-1190-1 uvby98 100112185
V* eps UMa WDS J12540+5558AB Gaia DR3 1576683529448755328

Search by coordinates in Vizier (radius: 5 arcsec)

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

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report an error concerning the data of this object

2023.09.24-11:47:14

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